Isospin mixing in a particle-number conserving microscopic approach
| hal.structure.identifier | Theoretical Division [LANL] | |
| dc.contributor.author | BONNEAU, L. | |
| hal.structure.identifier | Département Recherches Subatomiques [DRS-IPHC] | |
| dc.contributor.author | BARTEL, J. | |
| hal.structure.identifier | Theoretical Division [LANL] | |
| hal.structure.identifier | Centre d'Etudes Nucléaires de Bordeaux Gradignan [CENBG] | |
| dc.contributor.author | QUENTIN, P. | |
| dc.date.issued | 2007 | |
| dc.description.abstractEn | We calculate the isospin-mixing parameter for several Tz=-1, Tz=0 and Tz=1 nuclei from Mg to Sn in the particle-number conserving Higher Tamm-Dancoff approach taking into account the pairing correlations. In particular we investigate the role of the Coulomb interaction and the |Tz|=1 pairing correlations. To do so the HTDA approach is implemented with the SIII Skyrme effective nucleon-nucleon interaction in the mean-field channel and a delta interaction in the pairing channel. We conclude from this investigation that the pairing correlations bring a large contribution to isospin-symmetry breaking, whereas the Coulomb interaction turns out to play a less important role. Moreover we find that the isospin-mixing parameters for Tz=-1 and Tz=1 nuclei are comparable while they are about twice as large for Tz=0 nuclei (between 3% and 6%, including doubly magic nuclei). | |
| dc.language.iso | en | |
| dc.title.en | Isospin mixing in a particle-number conserving microscopic approach | |
| dc.type | Document de travail - Pré-publication | |
| dc.subject.hal | Physique [physics]/Physique Nucléaire Théorique [nucl-th] | |
| dc.identifier.arxiv | 0705.2587 | |
| hal.identifier | in2p3-00152347 | |
| hal.version | 1 | |
| hal.audience | Non spécifiée | |
| hal.origin.link | https://hal.archives-ouvertes.fr//in2p3-00152347v1 | |
| bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.date=2007&rft.au=BONNEAU,%20L.&BARTEL,%20J.&QUENTIN,%20P.&rft.genre=preprint |
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